A weak low pressure system out of the Gulf of Alaska will keep San Diego County's weather unusually cool, and probably damp, through Tuesday, and winds will continue to gust hard in the region's deserts, says the National Weather Service.

Forecasters say the daytime high Tuesday at Lindbergh Field will reach 60, which is eight degrees below average. Temperatures will be tamped down by onshore winds that will thicken the marine layer, producing sporadic drizzle at various spots west of the mountains, especially at the coast. Powerful winds will shoot through Anza Borrego Desert.

The low pressure system began to cool things off on Sunday and was dynamic enough to generate drizzle on Monday. All but a few areas received less than one-tenth of an inch of rain. The region needs far more; Since July 1, Lindbergh has recorded 6.23'' of rain, which is 3.60'' below normal. The lack of rain means that the back country will dry out earlier than usual, raising the risk of wildfires.

Monday's winds were more impressive than the rain. By 11 a.m., winds had gusted to 55 mph on Volcan Mountain, 48 mph at Harrison Park, 46 mph at Ocotillo Wells, 43 mph in Julian, 42 mph at Ranchita, 41 mph at Boulevard, and 38 mph in Borrego Springs.

Forecasters say the weather will slowly begin to warm up on Wednesday, and that daytime highs in San Diego will reach the low 70s on Thursday.